Electrolytic rectifier



Nov. 1, 1927. 1,647,649

1 W. MORRISON ELECTROLYTIC RECTIFIER Filed Oct. 15, 1925 Patented Nov. 1, 1927.

UNITED STATES PATENT OFFICE.

WILLIAI MORRISON, OI CHICAGO, ILLINOIS; MARGBET MORRISON ADIINIS'IBATBIZ OI EAID WILLIAI IOBBISON, DECEASED.

ELECTROLYTIC RECTIFIER.

a plication fled October 15, 1925. swarm. 82,880.

My invention relates to an electrolytic rectifier particularly adapted for use in con nection with a source of alternating current for furnishin unidirectional current to the elements of tu sused in radio work and for charging storage batteries.

As the filming electrode I use metallic niobium or tantalum, and as the non-filming electrode I use lead, platinum, or any other non-filming metal not materially attacked by the electrolyte, or carbon.

For the electrolyte I use a solution of zirconium sulfate, or zirconium nitrate, though I refer the sulfate.

I have ound that a rectifier so constructed is capable of use with as high difierence of potential as 250 volts.

The film formed on the niobium or tanj talum plate when. operating in a solution as above described is very permanent and of these metals, which alloy in all proportions may be used, and the use of such alloys, is included in this invention.

The accompanying drawing illustrates the described rectifier, the figure being a transverse vertical section through the cell and electrolyte, the electrodes being shown in elevation.

I claim:

1. An electrolytic rectifier havin an electrode of material selected from t e group consisting of niobium and tantalum, and an electrode of a non-filming conductor in an electrolyte of zirconium sulfate.

2. In an electrolytic rectifier havin a filming electrode and a non-filming e ectrode, an electrolyte of zirconium sulfate.

3. An electrolytic rectifier havin an electrode of material selected from t egrou consisting of niobium and tantalum, an an electrode of a non-filming'conductor in an electrolyte of a zirconium salt.

In testimony whereof, I aflix my signature.

WILLIAM MORRISON. 

